System and method for online monitoring fastening stress of bolts of wind driven generator

A wind power generator, fastening stress technology, applied in the direction of measuring torque/torsion force, measuring device, force/torque/power measuring instrument, etc. during tightening, can solve the problem that there is no wind power generator bolt fastening stress monitoring system and monitoring method and other problems, to achieve the effect of increasing uptime, reducing maintenance costs, and ensuring accurate requirements

Pending Publication Date: 2019-03-01
长沙飚能信息科技有限公司
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Problems solved by technology

It can be seen from the objects of the above-mentioned invention and utility model that there is no s

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  • System and method for online monitoring fastening stress of bolts of wind driven generator
  • System and method for online monitoring fastening stress of bolts of wind driven generator
  • System and method for online monitoring fastening stress of bolts of wind driven generator

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Embodiment 1

[0047] Such as Figure 1-5 As shown, the present invention provides a system for on-line monitoring of the fastening stress of the wind-driven generator bolts, including a monitoring probe installed at the end of the full-circle connection bolt at the blade root of the wind-driven generator, and a Temperature sensors, data acquisition and processing equipment connected to the monitoring probe and temperature sensor, and a monitoring system for monitoring the pretightening force of each bolt of the wind turbine; the data acquisition and processing equipment includes channel collectors and / or communication controllers;

[0048] Wherein the data collection and processing equipment includes a data processing system, which is used for data processing and analysis of fan information, bolt information, data collected by monitoring probes and temperature sensors;

[0049] The monitoring system is used to calculate the uploaded data, calculate the bolt pre-tightening force and temperat...

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Abstract

The invention provides a system and method for online monitoring the fastening stress of the bolts of a wind driven generator. The system comprises a monitoring probe, a temperature sensor, a data acquisition and processing device, and a monitoring system. By accurately positioning a specific wind driven generator, blades and bolts, the accurate position of a specific bolt is monitored. By monitoring the fastening stress of the whole round of bolts at the wind blade root of the wind driven generator detected by ultrasonic in real time, and performing correction based on a strain error caused by a temperature change of the environment where the bolt is located, the accurate actual fastening stress of the specific bolt is obtained, whether the bolt is loose or fractured is determined, and early warning and fault determination are promptly conducted. Thus, an operation and maintenance worker can know the health status of the blade root bolts ay any time. The system and method fill in thegap that there is no online real-time monitoring system for wind driven generator bolts.

Description

technical field [0001] The invention relates to the technical field of wind power generator monitoring, in particular to a system and method for on-line monitoring of wind power generator bolt fastening stress. Background technique [0002] Wind power generation is an important way to utilize renewable energy on a large scale. With the rapid development of the global wind power industry, the installed scale and stand-alone capacity continue to expand. Wind turbine blades are the core components of wind turbines to capture wind energy, and are usually connected to the main engine with 10.9-grade high-strength bolts. The connecting bolts of wind turbine blades are subjected to alternating loads during operation. The working load is large and the stress is complex. Often due to vibration loosening, fatigue or even fracture, the operation accidents of wind turbines are caused, causing huge economic losses to the country and enterprises. In addition, it is not uncommon for wind ...

Claims

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Application Information

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IPC IPC(8): G01L5/24
CPCG01L5/246
Inventor 严勇刘楚达魏光明
Owner 长沙飚能信息科技有限公司
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